Iowa State University

As agriculture intensified in the 20th century, summers in the Midwest became wetter and cooler.

An MIT study published this month looked at whether vegetation from crop production, rather than greenhouse gas emissions that are an established source of climate changes, could have driven these regional impacts.

No matter how far fruits or vegetables travel, whether they’re grown organically or conventionally, they’re packed with vitamins, minerals and other necessary nutrients. The men and women in the fields try to grow foods with an eye to boosting the health factor, but researchers say it’s hard to measure the precise impact.

As soybean and cotton farmers across the Midwest and South continue to see their crops ravaged from the weed killer dicamba, new complaints have pointed to the herbicide as a factor in widespread damage to oak trees.

Monsanto and BASF, two of agriculture’s largest seed and pesticide providers, released versions of the dicamba this growing season. The new versions came several months after Monsanto released its latest cotton and soybean seeds genetically engineered to resist dicamba in 2016. Since then, farmers across the Midwest and South have blamed drift from dicamba for ruining millions of acres of soybeans and cotton produced by older versions of seeds.

Now, complaints have emerged that the misuse of dicamba may be responsible for damage to oak trees in Iowa, Illinois and Tennessee.

Farmers in the U.S. like to point out that their products feed people all over the world. And while this is a diverse country, the people working on farms and elsewhere in agriculture often don’t reflect the nation’s demographics. Changing that is becoming a priority, in hopes new people will bring fresh ideas to meet some of our food system’s greatest challenges.